There is a blue circle on Vive HUD

Hi, when I update to 4.14.1, I found there is a blue circle shows on Vive HUD in the vr template. The blue circle is attached to motion controller pawn DefaultSceneRoot, how to get rid of it, please help, thanks

What do you mean by HUD? Also, a screenshot of your problem would make it easier to help.

I mean on the vive heand mount screen, It’s hard for me to make a screenshot as the blue circle is only on vive head mount screen not on my pc screen, any idea I can screenshot my vive screen? I am wondering the problem came from updating my steam vr not unreal. thanks